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Importing Data from Affymetrix MAS 5.0 Files



The data files must be in two-column format, with m/Z in the first column and spectral value in the second column. If there are more than two columns the other columns will be ignored. Columns must be separated by whitespace or a comma.

The files may have a header consisting of lines beginning with a "#" character. Data will be read from the fist line that does not begin with a "#" character to the end of the file or until another line is found that begins with a "#" character. If you have problems with data import please inspect your data files as there are many corrupt files out there.

There are three scripts available for spectral or peak data: